% 牵引特性
function F = getMaxFt(v_kmh)
% F = min([-0.227*v_kmh+260 33120/v_kmh]); %CRH380B
% F = min([-0.24375*v_kmh+267 36480/v_kmh]); %CR400
F = min([-0.375*v_kmh+276 34560/v_kmh]); %CR400-2